In the Caribbean, the Gulf, Southeast Asia and other storm-belt markets, an entrance door is part of the building envelope's survival strategy. When a door fails in a hurricane, sudden internal pressurisation can lift the roof. That is why serious coastal projects specify a tested wind-resistance class — not a “heavy-duty” adjective.
What a Wind Class Certifies
Wind-resistance classification subjects the closed doorset to escalating pressure differentials that simulate storm loading, measuring deflection, permanent deformation and whether the door stays engaged in its frame. Class 12 sits at the top of the scale — hurricane-force loading — meaning the tested doorset held its geometry and seal under the highest test pressures.
The Engineering Behind It
- A rigid leaf — cast-aluminium shell over a honeycomb steel core resists flexing
- Multi-point locking on all four edges so pressure loads spread across many anchors
- A reinforced frame anchored deep into the structure
- Continuous sealing plus a drop-seal to keep driven rain out under pressure
One Door, Several Climate Threats
Storm markets are usually also salt-air markets. Specifying wind class alone while ignoring corrosion means the door that survived the storm rusts in the calm. WONLY builds its export doors for the whole coastal profile: wind Class 12 (hurricane-rated), corrosion-proof cast-aluminium construction, 200,000+ cycle-tested hardware and certification to ISO 9001/14001, CE, UL and CMA.
Specification Checklist for Storm-Belt Projects
- Tested wind-resistance class for the complete doorset
- Corrosion-resistant material and finish for salt exposure
- Confirmation the security and fire ratings were tested on the same construction
- Local code and insurer wind requirements for your market
FAQ
Is a hurricane-rated door automatically a security door? No — wind class and burglar resistance are separate tests. Coastal projects should specify both; WONLY doorsets carry wind Class 12 alongside Class A security on applicable series.
